Hinge for spectacles
CA 2487910 C · Owner: Richard, Louis · Inventors: Richard, Louis; Chagny, Yves
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The hinge is for use on spectacles of the type comprising a front frame for carrying lenses and a pair of temples. The hinge comprises a first attachment device for attaching the hinge to a corresponding one of the temples a second attachment device for attaching the hinge to the frame a rigid intermediate portion, a first flexible resilient portion carrying the first attachment device and attached to the rigid intermediate portion and a second flexible resilient portion carrying the second attachment device and attached to the rigid intermediate portion opposite the first resilient portion.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 18, 2004 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 18, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.